CN221119833U - Drill bit and down-the-hole drill - Google Patents
Drill bit and down-the-hole drill Download PDFInfo
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- CN221119833U CN221119833U CN202323382404.5U CN202323382404U CN221119833U CN 221119833 U CN221119833 U CN 221119833U CN 202323382404 U CN202323382404 U CN 202323382404U CN 221119833 U CN221119833 U CN 221119833U
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- drill bit
- bit body
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- channel
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- 239000002893 slag Substances 0.000 claims abstract description 90
- 238000007599 discharging Methods 0.000 claims abstract description 57
- 239000000956 alloy Substances 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 239000011435 rock Substances 0.000 abstract description 26
- 239000013049 sediment Substances 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The application discloses a drill bit and a down-the-hole drill, which comprise a drill bit body, wherein a central channel and an air channel are arranged in the drill bit body; the end face of the drill bit body is provided with a first slag discharging channel which is radially arranged and communicated with the outlet of the air passage; the side wall of the drill bit body is provided with a first slag discharging groove which is communicated with the first slag discharging channel; the side of the slag discharging groove is provided with an auxiliary groove, and the width of the auxiliary groove gradually increases from one end close to the end face of the drill bit body to the other end. When the drill bit is used for drilling, high-pressure gas exhausted from the central channel through the air channel blows to the bottom of the hole, rock slag at the bottom of the hole is exhausted from the first slag exhausting channel through the first slag exhausting groove, and the side surface of the first slag exhausting groove is provided with the auxiliary groove, so that the width of the auxiliary groove is gradually increased, the rock slag can be prevented from being accumulated on the side surface of the drill bit body, the rock slag exhausting efficiency is improved, the drilling efficiency is improved, and the friction damage of the working end surface of the drill bit and alloy teeth is reduced.
Description
Technical Field
The application relates to the technical field of down-the-hole drilling tools, in particular to a drill bit and a down-the-hole drilling tool.
Background
The drill bit is a common rock drilling tool, and is used as a rock breaking action executing component, and is directly contacted with a rock stratum during operation, and the rotation torsion and impact force provided by the drilling tool are transmitted to the rock stratum so as to realize rock breaking and pore forming.
During the rock breaking process of the drill bit, rock is broken through the impact and cutting of alloy teeth on the working face of the drill bit, and the generated rock slag is blown out of the bottom of the hole by high-pressure gas discharged from the air hole of the drill bit and finally discharged through the space between the side face of the drill bit and the hole wall. However, the existing drill bit has poor slag discharging effect, and the rock slag in the hole can not be discharged in time, so that the drilling efficiency is affected, and the rock slag accumulated at the bottom of the hole is easy to abrade the working face of the drill bit and alloy teeth on the working face.
Therefore, how to provide a drill bit with smoother slag discharge to improve the working efficiency of drilling is a technical problem to be solved by those skilled in the art.
Disclosure of utility model
In order to solve the technical problems, the application provides the drill bit and the down-the-hole drill, which can enable slag discharge of the drill bit to be smoother, thereby improving drilling efficiency of the drill bit.
The technical scheme provided by the application is as follows:
A drill bit, comprising a drill bit body, wherein a central channel and at least one air channel communicated with the central channel are arranged in the drill bit body;
The end face of the drill bit body is provided with a first slag discharging channel which is radially arranged, and the first slag discharging channel is communicated with an outlet of the air channel;
The side wall of the drill bit body is provided with a first slag discharge groove which is communicated with the first slag discharge channel;
The side of the slag discharging groove is provided with an auxiliary groove, and the width of the auxiliary groove gradually increases from one end close to the end face of the drill bit body to the other end.
Further, at least one second slag discharging groove which is axially arranged is uniformly formed in the side wall of the drill bit body, and the second slag discharging groove is located between the adjacent first slag discharging grooves.
Further, at least one second slag discharging channel which is arranged in the radial direction is arranged on the end face of the drill bit body, the second slag discharging channel is positioned between the adjacent first slag discharging channels, and the second slag discharging channel is communicated with the corresponding second slag discharging groove.
Further, the side surface of the second slag discharging groove is provided with the auxiliary groove.
Further, a cutting edge is formed at one end of the side wall of the auxiliary groove, which is far away from the end face of the drill bit body.
Further, the end face of the drill bit body comprises a central end face and an outer inclined face located outside the central end face, an outlet of the air channel is located on the central end face, the central end face is a circular plane perpendicular to the axis of the drill bit body, the outer inclined face is a circular inclined face, the outer side of the outer inclined face is connected with the side wall of the drill bit body, and the normal line of the outer inclined face and the axis of the drill bit body form an included angle.
Further, alloy teeth are arranged on the central end face and the outer inclined surface, and an included angle is formed between the axis of the alloy teeth on the outer inclined surface and the normal line of the outer inclined surface, so that the alloy teeth incline to one side opposite to the rotating direction when the drill bit body drills.
Further, a conical groove is formed in the middle of the central end face, and an outlet of the air passage is located on the conical surface of the groove.
Further, a middle inclined plane is arranged between the central end face and the outer inclined plane, the middle inclined plane is a circular inclined plane, and the included angle between the normal line of the middle inclined plane and the axis of the drill bit body is smaller than the included angle between the normal line of the outer inclined plane and the axis of the drill bit body.
A down-the-hole drill comprises a drill body and the drill bit arranged on the drill body.
Compared with the prior art, the drill bit provided by the utility model has the advantages that when the drill bit is used for drilling, high-pressure gas exhausted from the central channel and the gas channel is blown to the bottom of the hole, rock slag at the bottom of the hole is exhausted from the first slag exhausting channel on the end surface of the drill bit body through the slag exhausting grooves on the side wall, and the side surface of the first slag exhausting groove is provided with the auxiliary groove, the width of the auxiliary groove is gradually increased, so that the rock slag can be prevented from accumulating on the side surface of the drill bit body, the rock slag exhausting is facilitated, the slag exhausting efficiency is improved, the drilling efficiency is further improved, the friction damage of the working end surface of the drill bit body and alloy teeth is reduced, and the service life of the drill bit is prolonged. The utility model also provides a down-the-hole drill, which comprises the drill bit and has the beneficial effects, and the description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a drill bit according to an embodiment of the present application;
FIG. 2 is a longitudinal cross-sectional view of a drill bit in an embodiment of the present application;
FIG. 3 is a schematic view of the deslagging direction of the rotary drill bit according to the embodiment of the application;
FIG. 4 is a schematic diagram of the rotation direction and the deslagging direction of the drill bit during formation drilling according to the embodiment of the application.
Reference numerals: the drill bit comprises a drill bit body 1, a central channel 2, an air channel 3, a first slag discharging channel 4, a first slag discharging groove 5, an auxiliary groove 6, a second slag discharging groove 7, a second slag discharging channel 8, a cutting edge 9, a central end face 10, an outer inclined surface 11, alloy teeth 12, a groove 13 and a middle inclined surface 14.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the application to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the application, are included in the spirit and scope of the application which is otherwise, without departing from the spirit or scope thereof.
As shown in fig. 1 to 3, the drill bit provided by the embodiment of the application comprises a drill bit body 1, wherein a central channel 2 and at least one air channel 3 communicated with the central channel 2 are arranged in the drill bit body 1; a first slag discharging channel 4 which is arranged radially is arranged on the end face of the drill bit body 1, and the first slag discharging channel 4 is communicated with the outlet of the air channel 3; the side wall of the drill bit body 1 is provided with a first slag discharge groove 5, and the first slag discharge groove 5 is communicated with the first slag discharge channel 4; the side of the slag discharging groove is provided with an auxiliary groove 6, and the width of the auxiliary groove 6 gradually increases from one end close to the end face of the drill bit body 1 to the other end.
Compared with the prior art, the drill bit that this embodiment provided, the air flue 3 symmetry is provided with two, at drilling work, from central passageway 2 through air flue 3 exhaust high pressure gas blow to the hole bottom, with the rock sediment at hole bottom from the first sediment passageway 4 on the terminal surface of drill bit body 1 through the sediment groove discharge drilled hole on the lateral wall, because the side of first sediment groove 5 is equipped with auxiliary groove 6, and auxiliary groove 6's width increases gradually, can prevent that rock sediment from piling up at the side of drill bit body 1, thereby help the rock sediment to discharge, improved and arrange sediment efficiency, and then help improving drilling efficiency, and help reducing the work terminal surface of drill bit body 1 and alloy tooth 12's friction damage, the life of extension drill bit.
Wherein, the drill bit is rotated and is drilled, and auxiliary tank 6 is located the opposite side of first row slag groove 5 with drill bit body 1 rotation direction, and one side of auxiliary tank 6 communicates with each other with first row slag groove 5, and the opposite side of auxiliary tank 6 is the inclined plane, makes auxiliary tank 6 along arranging sediment direction increase gradually to when drill bit body 1 is rotated and is drilled, the rock sediment that produces is discharged along the rear and is drilled the hole, both is convenient for arrange sediment, helps reducing the friction of rock sediment to drill bit body 1 again. Arrow a in fig. 3 and 4 is the rotation direction of the drill bit when drilling, and arrow b is the slag discharging direction of the air flow.
In order to further improve the slag discharging efficiency, in this embodiment, at least one second slag discharging groove 7 disposed axially is uniformly disposed on the sidewall of the drill bit body 1, and the second slag discharging groove 7 is located between adjacent first slag discharging grooves 5. A plurality of second slag discharging grooves 7 are formed in the side wall of the drill bit body 1, so that rock slag at the bottom of the hole can be discharged from the side wall of the drill bit body 1.
The technical scheme is optimized in this embodiment, at least one second slag discharging channel 8 is radially arranged on the end face of the drill bit body 1, the second slag discharging channel 8 is located between the adjacent first slag discharging channels 4, and the second slag discharging channel 8 is communicated with the corresponding second slag discharging groove 7. One end of the second slag discharging channel 8 is positioned in the middle of the drill bit body 1, the other end is communicated with the corresponding second slag discharging channels, and the number of the second slag discharging channels 8 can be equal to or smaller than that of the second slag discharging grooves 7. The provision of the second slag discharging channel 8 facilitates the discharge of the slag at the end of the bit body 1 to the side wall of the bit body 1.
Preferably, the side surface of the second slag discharging groove 7 is provided with the auxiliary groove 6. The auxiliary groove 6 is positioned at one side of the second slag discharging groove 7 opposite to the rotation direction of the drill bit body 1, one side of the auxiliary groove 6 is communicated with the second slag discharging groove 7, and the other side of the auxiliary groove 6 is inclined, so that the auxiliary groove 6 is gradually increased along the slag discharging direction.
In one embodiment, the side wall of the auxiliary groove 6 is formed with a cutting edge at an end of the end surface of the drill body 1. The auxiliary groove 6 is positioned at one side of the first slag discharging groove 5 or the second slag discharging groove 7, one side of the auxiliary groove 6 is communicated with the first slag discharging groove 5 or the second slag discharging groove 7, the other side of the auxiliary groove 6 is an inclined plane, the auxiliary groove 6 is gradually increased along the slag discharging direction, a cutting edge 9 is formed on the side wall of the tail end of the auxiliary groove 6, a drill bit is reversely rotated in the drilling process, the cutting edge 9 can cut rocks with convex hole walls, and the drill bit can be prevented from being jammed and is smoothly withdrawn from the hole.
In this embodiment, the end surface of the drill bit body 1 includes a central end surface 10 and an outer inclined surface 11 located outside the central end surface 10, the outlet of the air channel 3 is located on the central end surface 10, the central end surface 10 is a circular plane perpendicular to the axis of the drill bit body 1, the outer inclined surface 11 is a circular inclined surface, the outer side of the outer inclined surface 11 is connected with the side wall of the drill bit body 1, and the normal line of the outer inclined surface 11 forms an included angle with the axis of the drill bit body 1. The outer inclined surface 11 is arranged on the outer side of the central end surface 10, which is beneficial to increasing the working area of the end surface of the drill bit body 1 and improving the drilling efficiency.
In this embodiment, the above technical solution is optimized, alloy teeth 12 are disposed on the central end face 10 and the outer inclined surface 11, and an included angle is formed between an axis of the alloy teeth 12 on the outer inclined surface 11 and a normal line of the outer inclined surface 11, so that the alloy teeth 12 incline to a side opposite to a rotation direction when the drill bit body 1 is drilled.
In the prior art, the alloy teeth 12 at the edge of the drill bit are usually arranged perpendicular to the surface of the drill bit, when the drill bit rotates, the torsion of rock stratum to the drill bit directly acts on the alloy teeth 12 perpendicularly, the alloy teeth 12 at the edge of the drill bit are easy to shear and fracture, so that the drill bit is scrapped due to failure of the alloy teeth 12 at the edge, the service life of the drill bit is shortened, the cost is increased, and meanwhile, the drilling efficiency is seriously influenced. In this embodiment, the alloy teeth 12 are inclined to the opposite side of the rotation direction of the bit body 1, so that the torsion of the alloy teeth 12 and the rock stratum is not perpendicular, and the cutting force of the rock stratum on the alloy teeth 12 on the outer inclined surface 11 at the edge of the bit body 1 is reduced, so that the alloy teeth 12 at the edge of the bit body 1 can be prevented from being broken and damaged, and the service life of the bit is prolonged.
In this embodiment, preferably, a conical groove 13 is disposed in the middle of the central end surface 10, and the outlet of the air channel 3 is located on the conical surface of the groove 13. The center of the drill bit body 1 is provided with a conical groove 13, which is helpful for positioning when the drill bit drills holes, and is not easy to deviate.
In this embodiment, preferably, a middle inclined plane 14 is disposed between the central end surface 10 and the outer inclined plane 11, the middle inclined plane 14 is a circular inclined plane, an included angle between a normal line of the middle inclined plane 14 and an axis of the drill bit body 1 is smaller than an included angle between a normal line of the outer inclined plane 11 and an axis of the drill bit body 1, and alloy teeth 12 are disposed on the middle inclined plane 14. The inner side of the outer inclined surface 11 is provided with the middle inclined surface 14, the transition is carried out through the middle inclined surface 14, the included angle between the axis of the alloy tooth 12 on the middle inclined surface 14 and the axis of the drill bit body 1 is smaller than the included angle between the axis of the alloy tooth 12 on the outer inclined surface 11 and the axis of the drill bit body 1, the problem that the working stress condition of the alloy tooth 12 at the edge of the drill bit body 1 is bad is solved, the possibility that the alloy tooth 12 at the edge falls off and breaks is reduced, and the service life of the drill bit is prolonged.
A down-the-hole drill comprises a drill body and the drill bit arranged on the drill body. The down-the-hole drill comprises the drill bit and has the beneficial effects of the drill bit, and the description is omitted here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A drill bit, characterized in that: the drill bit comprises a drill bit body, wherein a central channel and at least one air channel communicated with the central channel are arranged in the drill bit body;
The end face of the drill bit body is provided with a first slag discharging channel which is radially arranged, and the first slag discharging channel is communicated with an outlet of the air channel;
The side wall of the drill bit body is provided with a first slag discharge groove which is communicated with the first slag discharge channel;
The side of the slag discharging groove is provided with an auxiliary groove, and the width of the auxiliary groove gradually increases from one end close to the end face of the drill bit body to the other end.
2. The drill bit of claim 1, wherein at least one axially disposed second slag notch is uniformly disposed in a sidewall of the bit body, the second slag notch being located between adjacent first slag notches.
3. The drill bit according to claim 2, wherein at least one radially arranged second slag discharging channel is provided on an end face of the drill bit body, the second slag discharging channel being located between adjacent first slag discharging channels, the second slag discharging channel being in communication with the corresponding second slag discharging groove.
4. A drill bit according to claim 2 or 3, characterized in that the side of the second slag notch is provided with the auxiliary notch.
5. The drill bit of claim 1, wherein the side wall of the auxiliary flute is formed with a chip edge at an end of the end face remote from the bit body.
6. The drill bit of claim 1, wherein the end face of the drill bit body comprises a central end face and an outer inclined surface located outside the central end face, the outlet of the air passage is located on the central end face, the central end face is a circular plane perpendicular to the axis of the drill bit body, the outer inclined surface is a circular inclined surface, the outer side of the outer inclined surface is connected with the side wall of the drill bit body, and the normal line of the outer inclined surface forms an included angle with the axis of the drill bit body.
7. The drill bit of claim 6, wherein the central end surface and the outer bevel are each provided with an alloy tooth, and wherein the axis of the alloy tooth on the outer bevel is at an angle to the normal to the outer bevel such that the alloy tooth is inclined to the side of the bit body opposite the direction of rotation when drilling.
8. The drill bit of claim 6, wherein a conical recess is provided in the middle of the central end surface, and the outlet of the air passage is located on the conical surface of the recess.
9. The drill bit of any one of claims 6 to 8, wherein a central bevel is provided between the central end face and the outer bevel, the central bevel is a circular bevel, and an angle between a normal of the central bevel and an axis of the drill bit body is smaller than an angle between a normal of the outer bevel and the axis of the drill bit body.
10. A down-the-hole drill comprising a drill body and a drill bit according to any one of claims 1 to 9 provided on the drill body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323382404.5U CN221119833U (en) | 2023-12-12 | 2023-12-12 | Drill bit and down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323382404.5U CN221119833U (en) | 2023-12-12 | 2023-12-12 | Drill bit and down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221119833U true CN221119833U (en) | 2024-06-11 |
Family
ID=91372420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323382404.5U Active CN221119833U (en) | 2023-12-12 | 2023-12-12 | Drill bit and down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221119833U (en) |
-
2023
- 2023-12-12 CN CN202323382404.5U patent/CN221119833U/en active Active
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